Research on seawater temperature and pressure sensor based on microfiber resonator

IF 5.2 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Measurement Pub Date : 2025-05-09 DOI:10.1016/j.measurement.2025.117776

Peng Gao , Jing Gao , Bo Han , Bo-wen Zheng , Feng Xia

{"title":"Research on seawater temperature and pressure sensor based on microfiber resonator","authors":"Peng Gao , Jing Gao , Bo Han , Bo-wen Zheng , Feng Xia","doi":"10.1016/j.measurement.2025.117776","DOIUrl":null,"url":null,"abstract":"<div><div>Aiming at the requirement of simultaneous measurement of seawater temperature and pressure, this paper presents a two-parameter sensing scheme of temperature and pressure using elliptical microfiber knot resonator (MKR). Its output spectrum consists of interference spectrum formed by modal interference within the microfiber and variant Vernier spectrum formed by resonance of different modes in the resonant ring region. The interference spectrum and variant Vernier spectrum were separated through Fast Fourier Transform (FFT) filtering. After analysis, pressure sensitivity of interference dip and variant Vernier envelope reached −46.68 pm/N and −63.46 pm/N, respectively, in the pressure range of 20 N ∼ 220 N. The maximal pressure sensitivity obtained by theoretical conversion is approximately −8.44 nm/MPa, and the pressure resolution is 2.37 × 10<sup>-3</sup> MPa, which corresponds to the water depth of 0.24 m. For interference dip and variant Vernier envelope, temperature sensitivities are −4.79 nm/℃ and −3.84 nm/℃ in 22℃∼38℃, respectively. This sensing structure shows good time stability, repeatability and hysteresis. The simultaneous demodulation of temperature and pressure is achieved by means of sensitivity matrix inversion. The sensing structure, which has a compact size, strong robustness, and high sensitivity, has a good application prospect for seawater temperature and pressure two-parameter sensing.</div></div>","PeriodicalId":18349,"journal":{"name":"Measurement","volume":"253 ","pages":"Article 117776"},"PeriodicalIF":5.2000,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Measurement","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0263224125011352","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Aiming at the requirement of simultaneous measurement of seawater temperature and pressure, this paper presents a two-parameter sensing scheme of temperature and pressure using elliptical microfiber knot resonator (MKR). Its output spectrum consists of interference spectrum formed by modal interference within the microfiber and variant Vernier spectrum formed by resonance of different modes in the resonant ring region. The interference spectrum and variant Vernier spectrum were separated through Fast Fourier Transform (FFT) filtering. After analysis, pressure sensitivity of interference dip and variant Vernier envelope reached −46.68 pm/N and −63.46 pm/N, respectively, in the pressure range of 20 N ∼ 220 N. The maximal pressure sensitivity obtained by theoretical conversion is approximately −8.44 nm/MPa, and the pressure resolution is 2.37 × 10^-3 MPa, which corresponds to the water depth of 0.24 m. For interference dip and variant Vernier envelope, temperature sensitivities are −4.79 nm/℃ and −3.84 nm/℃ in 22℃∼38℃, respectively. This sensing structure shows good time stability, repeatability and hysteresis. The simultaneous demodulation of temperature and pressure is achieved by means of sensitivity matrix inversion. The sensing structure, which has a compact size, strong robustness, and high sensitivity, has a good application prospect for seawater temperature and pressure two-parameter sensing.

查看原文本刊更多论文

基于微光纤谐振腔的海水温度压力传感器研究

针对同时测量海水温度和压力的要求，提出了一种利用椭圆型微纤维结谐振器（MKR）实现温度和压力双参数传感的方案。其输出光谱由微光纤内部模态干涉形成的干涉光谱和谐振环区域内不同模态共振形成的变游标光谱组成。通过快速傅里叶变换（FFT）滤波分离了干扰谱和变游标谱。经分析，在20 N ~ 220 N的压力范围内，干涉倾角和变异Vernier包络线的压力灵敏度分别达到- 46.68 pm/N和- 63.46 pm/N，理论换算得到的最大压力灵敏度约为- 8.44 nm/MPa，压力分辨率为2.37 × 10-3 MPa，对应水深为0.24 m。对于干扰dip和可变游标包络，在22℃~ 38℃范围内的温度灵敏度分别为- 4.79 nm/℃和- 3.84 nm/℃。该传感结构具有良好的时间稳定性、重复性和迟滞性。采用灵敏度矩阵反演的方法实现了温度和压力的同步解调。该传感结构体积紧凑、鲁棒性强、灵敏度高，在海水温度压力双参数传感中具有良好的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Measurement 工程技术-工程：综合

CiteScore

10.20

自引率

12.50%

发文量

1589

审稿时长

12.1 months

期刊介绍： Contributions are invited on novel achievements in all fields of measurement and instrumentation science and technology. Authors are encouraged to submit novel material, whose ultimate goal is an advancement in the state of the art of: measurement and metrology fundamentals, sensors, measurement instruments, measurement and estimation techniques, measurement data processing and fusion algorithms, evaluation procedures and methodologies for plants and industrial processes, performance analysis of systems, processes and algorithms, mathematical models for measurement-oriented purposes, distributed measurement systems in a connected world.